@article{COCV_2009__15_1_173_0,
     author = {Agrachev, Andrei A. and Chittaro, Francesca C.},
     title = {Smooth optimal synthesis for infinite horizon variational problems},
     journal = {ESAIM: Control, Optimisation and Calculus of Variations},
     pages = {173--188},
     publisher = {EDP-Sciences},
     volume = {15},
     number = {1},
     year = {2009},
     doi = {10.1051/cocv:2008029},
     mrnumber = {2488574},
     zbl = {1158.49039},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/cocv:2008029/}
}